Evaluate a linear function
To evaluate a function, or find a functional value, means to substitute a given value in the domain into the equation to find the corresponding element in the range.
Given f(x)=x+3, find f(2)
Plug x=2 into the function and simplify.
| f(x) |
= |
x+3 |
|
|
| f(2) |
= |
2+3 |
|
Plug x=2 |
| f(2) |
= |
5 |
|
Simplify |
